Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Fluid loss additive for cement slurries containing a n-vinyl-2-pyrrolidone-.omega.-2-acrylamido-2-methylpropane sulfonate-.omega.-acrylic acid-.omega.-acrylamide polymer

Fluid loss additive for cement slurries containing a n-vinyl-2-pyrrolidone-.omega.-2-acrylamido-2-methylpropane sulfonate-.omega.-acrylic acid-.omega.-acrylamide polymer

US Patent 5109042 · Granted Apr 28, 1992

Estimated economic value: $5,268,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Low density well cement compositions and method of use2001
Drilling mud comprising tetrapolymer consisting of n-vinyl-2-pyrrolidone, acryla1995
Fluid loss additives for well cementing compositions1994
Fluid loss additives for well cementing compositions containing a tetrapolymer1992
Drilling mud comprising tetrapolymer consisting of N-vinyl-2-pyrrolidone, acryla1992
Well cement slurries and dispersants therefor1991
Well cement slurries and dispersants therefor1990